Optimising 3D Printed Concrete Structures Using Topology Optimisation

Topology optimization in concrete construction: a systematic review on numerical and experimental investigations

“…Manufacturing as well as material specific constraints of 3D-printed concrete structures within TO with incorporated maximum overhang limitations can be considered. Also orthotropic properties of printed concrete as well as the manufacturing constraint have been taken into account (Martens et al 2018). In their recent study, Wang et al (2020) think the issue of constructing optimal geometries even further and propose a space-time TO algorithm that allows for concurrent optimization of the structure as well as fabrication sequences for additive manufacturing.…”

Mixture design and processing of novel spray-based cementitious materials for 3D printing

“…However, the excessively rapid rising of yield stress may lead to poor pumpability or even clogging of hose. In this case, open time is critical to the printing performance of material (Le et al 2012a, Martens et al 2018, which identifies the window available for printing. The insight for the second strategy comes from the influence of delivery on buildability.…”

“…Another option is combining plastic printing and spray-based 3D concrete printing, where printed plastic can serve as the internal reinforcement/skeleton in the composite structure. Simulation of the printed composite structure and topological studies may be conducted to optimize the plastic skeleton for better mechanical performance (Bruggi 2009, Martens et al 2018. Fig.…”

Large scale 3D concrete printing : process and materials properties

“…In order to create a complex optimized structure, a case study of a simple bending beam was made. Two topology optimized structures were generated using a modified topology optimization algorithm as shown in Martens et al [89] present work on optimizing 3D printed concrete structures.…”

“…The research incorporates the orthotropic properties of the printed concrete and the manufacturing constraint of the 3D concrete printer is taken into consideration for the topology optimisation algorithm. This adoption of topology optimisation in concrete structure can save material which can potentially create sustainable and cost-efficient structures [89]. However, his investigation only introduces the methodology and algorithm to optimize the structure for stiffness and the work proposes was not validated with actual printing.…”